• Tonight

    Aug 31

    Lo 53°

    Partly cloudy

    Hair Frizz Weather
    • Wind
      Gust
      20 mph
    • Precip
      1%
    • Hours of Precip
      0
    more
  • Tue

    Sep 1

    86°Lo 52°

    Plenty of sunshine

    Watch for hair frizz
    • Wind
      Gust
      10 mph
    • Precip
      3%
    • Hours of Precip
      0
    more
  • Wed

    Sep 2

    80°Lo 51°

    Mostly sunny

    Watch for hair frizz
    • Wind
      Gust
      10 mph
    • Precip
      2%
    • Hours of Precip
      0
    more
  • Thu

    Sep 3

    82°Lo 48°

    Plenty of sunshine

    Watch for hair frizz
    • Wind
      Gust
      7 mph
    • Precip
      4%
    • Hours of Precip
      0
  • Fri

    Sep 4

    85°Lo 46°

    Areas of low clouds, then sun

    Unlikely for hair frizz
    • Wind
      Gust
      10 mph
    • Precip
      1%
    • Hours of Precip
      0
    more
Next Previous
Hi 82° RealFeel® 87° Precipitation 4%

Day

N

E

S

W

  • N 5 mph
  • Gusts: 7 mph

Plenty of sunshine

  • Max UV Index: 7 (High)
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 48° RealFeel® 50° Precipitation 2%

Night

N

E

S

W

  • W 2 mph
  • Gusts: 5 mph

Clear

  • Max UV Index: N/A
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Sep 3

more Historical Weather Data >
  Today Normal Record 9/3/2014
High 82° 89° N/A 95°
Low 48° 51° N/A 64°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:42 AM with 12:57 of sunlight, then sets at 7:39 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:11 PM with 14:16 of moolight, then sets at 1:27 PM

Lucerne Weather Report

San Francisco: Dry, Pleasant Conditions to Span Week

August 31, 2015; 3:48 PM ET

The San Francisco area will have dry and seasonable conditions throughout the week. more >

The History Behind the UV Index

Nov 12, 2012; 5:00 AM ET The UV index has been around since the early 1990s. It was created to help you plan outdoor activities in hopes to limit overexposure to the sun. Jeannette Calle has more.

Thu. Hair Frizz

Thu. Wind Maps

Thu. UV Index